There is no practice of pilgrimage by Jehovah’s Witnesses; no sacred site which members visit. However, there are a number of tour companies owned by individual Jehovah’s Witnesses, through which travel can be booked for whole congregations to visit the headquarters in either the USA or Britain. Tours of the Holy Land can also be booked, although these are not considered pilgrimages. Tours can also be booked for national museums, such as the British Museum in London, where a Jehovah’s Witness guide explains the significance of archaeological discoveries, in accordance with Watch Tower teachings. Members also attend the annual conventions in various different locations.